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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
161
Companies
980
Updated
11.06.2026
161 Questions 980 Companies11.06.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Merge Two Sorted Lists

This question evaluates proficiency with linked list data structures, pointer manipulation, in-place merging of sorted sequences, and general algorith...

Coding & AlgorithmsLinked Lists
13
0
93 people solved
Mar 18, 2026
Meta logo
Meta
Medium
Machine Learning Engineer

Solve linked list, tree, and grid problems

Problem A — Find cycle entry in a singly linked list You are given the head of a singly linked list. The list may contain a cycle. - Return the node w...

Coding & AlgorithmsLinked ListsGrids & Matrices
21
0
151 people solved
Dec 15, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Design a fair event registration queue API

This question evaluates a candidate's ability to design an in-memory, FIFO event registration service using object-oriented design, testing knowledge ...

System DesignData Structure Design
13
0
226 people solved
Dec 15, 2025
Chime logo
Chime
Medium
Backend Engineer Locked

Design browser history across tabs

This question evaluates a candidate's ability to design stateful data structures and manage per-tab navigation history, testing competencies in data s...

Software Engineering FundamentalsData Structure DesignLinked Lists
6
0
115 people solved
Feb 26, 2026
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Implement common data-structure and JS tasks

This multi-part prompt evaluates core competencies in data structures and algorithms (time-based key-value design, duplicate removal in sorted linked ...

Coding & AlgorithmsData Structure DesignJavaScript & TypeScript
15
0
199 people solved
Feb 12, 2026
Google logo
Google
Medium
Software Engineer Locked

Solve several coding interview problems

This set of problems evaluates proficiency in string processing and combinatorial parsing, arbitrary-precision arithmetic using string representations...

Coding & AlgorithmsBacktracking & RecursionArrays & Strings
18
0
176 people solved
Mar 4, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Solve linked list, grid BFS, and median queries

This multi-part question evaluates proficiency in in-place linked list manipulation, reasoning about shortest connections between connected components...

Coding & AlgorithmsLinked ListsGrids & Matrices
29
0
355 people solved
Jan 22, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Design a max-stack with efficient operations

Design a max-stack with efficient operations Design a stack that supports push (x), pop(), top(), peekMax(), and popMax(). The popMax operation must r...

Coding & AlgorithmsData Structure DesignStacks & Queues
15
0
122 people solved
Aug 8, 2025
Oracle logo
Oracle
Hard
Software Engineer Locked

Implement in-memory data structures and booking API

This question evaluates proficiency in data structures and algorithms, systems-level data modeling, and practical API design by testing in-memory key-...

Coding & AlgorithmsData Structure DesignLinked Lists
10
0
143 people solved
Feb 12, 2026
Google logo
Google
Medium
Product Manager

Add one to a non-negative integer stored as an array of decimal digits

You are given an array in which every element is a single decimal digit between 0 and 9, and the elements together represent one non-negative whole nu...

Software Engineering FundamentalsArrays & StringsMath & Number Theory
1
0
13 people solved
May 13, 2025
Citadel logo
Citadel
Medium
Software Engineer Locked

Merge K timestamped lists with timestamp coalescing

This question evaluates algorithmic skills in merging multiple sorted sequences, coalescing records by key (timestamp), merging sorted value arrays, a...

Coding & AlgorithmsHeaps & Priority QueuesSorting
28
0
195 people solved
Jan 22, 2026
Meta logo
Meta
Easy
Machine Learning Engineer Locked

Solve two linked list/array tasks

This two-part question evaluates proficiency with fundamental data structures and algorithmic problem-solving—specifically linked list manipulation an...

Coding & AlgorithmsLinked ListsBinary Search
4
0
84 people solved
Dec 14, 2025
Medium
Software Engineer

Reverse a Singly Linked List In Place

Reverse a singly linked list and return its new head. Constraints and Clarifications For the standard practice contract, the list is finite and acycli...

Coding & AlgorithmsLinked Lists
0
0
7 people solved
Jan 14, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Remove nodes with a given value

This question evaluates proficiency in singly linked list manipulation, specifically pointer handling and in-place node removal, and falls under the C...

Coding & AlgorithmsLinked Lists
21
0
203 people solved
Feb 12, 2026
TikTok logo
TikTok
Medium
Software Engineer

Reverse nodes in even-length linked-list groups

Problem Given the head of a singly linked list, you will traverse the list in contiguous groups of increasing size: the 1st group has size 1, the 2nd ...

Coding & AlgorithmsLinked Lists
8
0
114 people solved
Dec 11, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Design a single-machine LRU cache

Design an in-memory LRU cache for a single machine using a hash map and a doubly linked list to support O( 1) get and put. Explain how you handle capa...

Coding & AlgorithmsData Structure DesignConcurrency
14
0
112 people solved
Sep 6, 2025
Meta logo
Meta
Easy
Software Engineer

Implement list cloning and k-frequency finder

You are given two separate coding tasks. --- Problem 1: Deep copy a linked list with extra pointers You are given the head of a singly linked list. Ea...

Coding & AlgorithmsLinked ListsArrays & Strings
5
0
100 people solved
Nov 27, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Solve sliding-window, flattening, decode, and O(1) random set

This multi-part question evaluates competence in string processing and nested parsing, linked-list flattening and recursion depth management, dynamic ...

Coding & AlgorithmsTwo Pointers & Sliding WindowData Structure Design
12
0
141 people solved
Feb 4, 2026
SoFi logo
SoFi
Medium
Software Engineer

Design a key-value store with getLast

Design a key-value store with getLast Design and implement an in-memory key–value store with this API: add(key, value), get(key), remove(key), and get...

Coding & AlgorithmsData Structure DesignLinked Lists
13
0
102 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Software Engineer

Design an O(1) recency-evicting cache

Design and implement a fixed-capacity in-memory cache that supports get(key) and put(key, value) in average O( 1) time. When capacity is exceeded, evi...

Coding & AlgorithmsData Structure DesignLinked Lists
9
0
122 people solved
Sep 6, 2025
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